beach



c. P. BEACH.

GEAR REMOVER. M'Pucmon FILED JULY i6, 19u.

i1 ,3 13,51 1. Patented Aug. 19, 1919.

45 axis of the sliding sleeve passes a screw,

CHARLES 1. BEACH, 0F LITTLETON, NEW HAMPSHIRE.

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Specication of Lett-ers Batent.

Patented Aug'. 19, 1919.

Application led July 26, 1917. Serlal No. 182,847.

To all whom t may concern.'

Be it known that I, CHARLES P. BEACH, a citizen of the United States of America, residing in thev town of Littleton, in the county of Grafton and State of New Hampshire, have l,jillvented an Improvement in Gear-Removers, of which the following is a specification,

My pr I lvnt invention relates to gear removers;ai1d has for its object, to provide such a device'of rugged and simple construction which may be rapidly put 1n place, and which, after it is adjusted in position, is locked there. It further has for its object0 the provision of means by which the jaws which embrace the gear to be removed are by the relative motion of the gear and shaft in the operation of the device more closely approximated tofthe gear, so that when the gear and shaft move relatively2 the jaws do not slipv away, but are maintamed in osition. Another object of the invention 1s to arrange such a remover as I have above out- 1ined so that it may employ either two jaws or a greater number, as may be desired. In general three'fwill be sufficient, even for the largest sizes, and this is the best number, as there is then no tendency to rock, since three points determine .the transverse plane of the device when applied. There are, however, conditions in which only two jaws can conveniently be em loyed.

To accom the ends pointed out, I provide a. h b engaging e gear, w ich are ell-crank? levers, and these are hinged to a hub; vconcentric with the hub is a sliding sleeve which is provided with a collar having re cesses or a recess which engages the inner ends of the bell-crank levers, so that as the collar is moved away from the hub, pressure is applied to open the bell-crank levers and when the collar is approximated to the hub, the outer ends of the levers are pressed toward the shaft and gear. Through the having a coned end, which is to be applied to the shaft; a locking device is provided also, so that when the sleeve and hub are in the desired relative position, they are locked together, thus causing the ends of the bellcrank levers to be hel firmly in engagement with the gesl'. I

plurality of swinging arms for, t

hub A is provided with the lugs marked A1"- to A* respectively. The lugs A2 and AI `are diametrically opposite; and in the device here illustrated each of them carries a gripping member, preferably in the form of a ell-crank lever B swinging upon a pin B1. The lugs A1 and A3 are arranged 120 apart and at the same an le with either one or the other of the lugs 2, A". By this arrangement, additional bell-crank levers may be disposed in these lugs and the one in the lug A* may be removed; the gear remover is then provided with three arms, and for the larger gears this is the preferred arrangement. In many cases, however, articularly in machinery which is assem led and where it is desired to remove a gear from .the shaft or to apply the remover without ta down the engine or other machine, -it 1s only possible to find passageways for two ofl the levers. Each of the bell-crank levers is provided with'a short arm B2, disposed substantiallyv at a right anle to the longer arm.

is a member longitudinally movable with respect to the base A and the o erating member D subsequently to be descri ed, and may comprise a slidin sleeve, which is provided with the collar preferably formed integral therewith; the collar has a groove, i or a suitable number of recesses as may be desired, C1, in which are disposed the short arms B2 ofthe bellcrank levers, the lower sides of which are slightly curved so that the lower ends of the levers may move freely toward and away from the axis ofthe inlst-rument as their shortarms are raised and 1 j j lowered by the sleeve C. It is obvious that v ion as the sleeve C is moved downward in Fi 1 andv 2, pressure will be applied to' t e ends as shown in dotted lines in Fig. 2'; and

when the sleeve C is drawn up, the arms will be approximated to the gear or shaft.

-upper sides of the shortarms of t1 I. i levers and they will be spread apart at their lower.

" ing care -to center t D is the operating means, comprising preferably a single operating member herein shown, by way of example, as -consisting of a screw by which power is applied to the end of the shaft, to force oii' the gear. It is provided with a coned end D2 to fit the center mark in the Shaft end, and a squared end D? to which a suitable handle or wrench may be applied.

E is the handle vof the locking device, which is threaded upon and secured by the pin e to a bolt E1; in a recess in the collar Al5 forming part of the hub A` are disposed nuts E2 Es, respectively threaded right and left `hand upon the bolt E1. When the liandle is turned to release the pressure of the nuts upon the sleeve c, the latter is free to move; but when the handle is depressed, as shown in Fig. 1, the sleeve and the hub are locked together as the nuts are forced together and against the outer surface of the sleeve, and move under the power of the screw D as an integer. Obviously other forms of device may be employed.

The operation of the gear-remover is as follows: When it is to be applied to a gear,

. such as the gear F shown in dotted lines in AFig. 2, sleeve 0 is moved down, pressure is thereby applied to the upper sides of the short arms Bf of the levers B so that the longer arms are spread into the position shown in dotted lines; the hooked ends b b of the levers are then adjusted below the gear,

the sleeve c is drawn up until the hooked ends b of the levers pass under the gear, take cone D2 of the screw upon the shaft G, the screw being of course adjusted to the correct distance from the hooks b; the handle E is then depressed,

locking the hub and sleeve together, Whereupon rotation of the screw D will apply endwise pressure to the shaft relative to the gear F, and the latter will be readily removed.

The effect of the described operation is to furnish always a horizontal component of the pressure applied b the screw, in such a direction as to approximate the levers to the shaft or gear so that by no possibility can they slip away from the gear. 'This has v sometimes been eii'ected by some separate/arrangement, such' as a ring to slip over the arms of the gear-remover, or the like, but

these are dispensed with by the arrangement which I' have illustrated.

The" device has obvious advaiit s,.being .'.xof ruggd construction and simp e tooperate,

th in adjusting it into position and in applying the operating ressure. Of

course it may be applied equa y well to re-A move hubs or pulleys, propellers, or the like.

I claim as my invention: 1. A gear remover comprising a supporting member, a plurality of movable gripping members attached to said supporting ping members and with said operatin member for causing said gripping mem ers to approach each other during the action of said operating member.

2. A gear' remover comprising a base, a plurality of movable gripping members supported by said base, operating means for said gear( remover, and means associated with said-operating means and actuated by the same for causing said gripping members to ,approach each other.

3. A gear remover comprising a hub carrying levers, a sleeve acting upon the levers by movementlrelative to the hub to approximate the levers to a gear, means for locking the sleeve and hub together, and means for imparting movement to the device in' a d1- rection to remove the gear.

4.. 'A gear remover comprising a base, a plurality of movable gripping members pivoted to said base, an operating member for said gear remover associated with said gripping members, and means associated with said gripping members and with said operating member for pivotally moving said gripping members to cause the same to approach each other during the action of said operating member.

5. A gear remover comprising a base, a

plurality of movable gripping members piv- V in one directionv causes the free ends of the-- levers to ap roach each other and in the otherv direction causes them to separate, means for locking the hub and the art together; and a screw the end of whic moves toward and away from the free ends of the levers and conversely relatively to the hub.

7. In a gear remover, a hub, bell crank levers carried by the hub, a sleeve concentric with the hub and sliding therein, the sleeve engaging the ends of the levers and by its motion relative to the hub opening and closing their free ends, and a locking ldevice for securing the sleeveY and hub together; with a screw the end of which moves relative \to the sleeve and hub toward tand away from the free ends of the levers. v

8. ,A gear remover .'c'omprisin'g a' base, a plurality of movable gripping'members attached to said base, 'amovable' :member associated withsaid basev and capableof movement longitudinally of the same, operating means associated -witli` said movable member andcapableomovementlon 'tudinally ofthe 11. A device of the character described,

same, and means associate with saidmovcomprising, in combination, a supporting able member for causing said gripping memmember, a plurality of movable gripping 30 bers to approach eachother by the action of members supported by said supporting 5 said operating means. -member, and operating means for said gear 9. A gear remover comprising a supporting remover acting to cause said gripping memmember, a plurality of movable gripping bers to approach each other to grip the work members pivoted i to said supporting memyWhen said gear remover is brought into oper- 35 A ber, a movable member assoclated Wlth said ative relation with the work.

l01base and capable of movement longitudinally 12. A gear remover com rising a base, a of said base, operating means associated plurality of gripping memlrners each pivoted with said movable member and capable of intermediate its endsvto said base, a movable movement longitudinally of the same, and member associated with said' base and with 40 means associated with said movable member said gripping members and adapted to en- 15 for causing said gripping members to be gage the non-Work-gripping ends of said pivotally moved to approach each other by pivoted grippin members, and operating the action of said operating means. means assoclate with said gripping mem- 10. A gear remover comprising a base, a. bers and with said movable member and act- 45 pluralit of movable gripping members suping to cause said movable member to actuate 20 ported by 4said base, operatlng means for said grippin `members to cause the latter to said gear remover, and means associated approach eac other to grip the work at the with said gripping members and with said same time that the operating means is operating means and actuated b the latter brought to bear against the Work. 50

\for causing said` gripping mem ers toap- In testimony whereof I have signed my V 2'5 proach each other to grip the work with a name to this specification this 24th day of force increasing as the force exerted on the July, 1917.

work bythe gear remover increases. CH'ARLES P. BEACH 

